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# Core isolation concepts
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 Part of the challenge of isolation is that there are multiple definitions of tenant isolation. For some, isolation is almost a business construct where they think about entire customers requiring their own environments. For others, isolation is more of an architectural construct that overlays the services and constructs of your multi-tenant environment. The sections below will explore the different types of isolation, and associate specific terminology with the varying isolation constructs. 

**Topics**
+ [Silo isolation](silo-isolation.md)
+ [Pool isolation](pool-isolation.md)
+ [The bridge model](the-bridge-model.md)
+ [Tier-based isolation](tier-based-isolation.md)
+ [Identity and isolation](identity-and-isolation.md)